NTSetFileObjectContexts(
  IN  PIRP            pIrp,
  IN  PVOID           FsContext,
  IN  PVOID           FsContext2
  );
Routine Description:

    This Routine handles fills in two context values in the Irp stack location,
    that has to be done in an OS-dependent manner.  This routine is called
    from NbtOpenAddress() when a name is being registered on the network( i.e.
    as a result of OpenAddress).

Arguments:

    pIrp - a  ptr to an IRP

Return Value:

    NTSTATUS - status of the request